Effect of Bacillus amyloliquefaciensYM6 on Growth Promotion of Maize Under Salt Stress

doi:10.13560/j.cnki.biotech.bull.1985.2019-0263

Abstract

Abstract: Bacillus amyloliquefaciens strain YM6 isolated from soil is able to mitigate the salt stress on maize. More detailed effects of stress relieving by this strain need to be elucidated. Provide new bacterials for the production of non-halophyte such as Maize and the improvement of saline soils in related areas. Maize seedlings were growing in hydroponic jars containing plant nutrients solution amended different concentrations of NaCl. YM6 was inoculated to these salt stressed seedlings,and plant growth was measured and analyzed. Results showed under 75 mmol/L NaCl stress,compared to the un-inoculated control,plant height increased by 15.2% when YM6 was inoculated to roots of maize seedlings. Root length and plant dry weight of inoculated maize increased by 28.8% and 27.0% respectively as compared to un-inoculated control. In the bonsai experiments with saline-alkali soil,plant height and dry weight of maize treated with YM6 increased by 37.8% and 43.9% respectively as compared to the un-inoculated control. Strain YM6 was also found to colonize maize root.Our preliminary results indicated that YM6 is able to alleviate the adverse effects of salt stress on maize.

Key words: Bacillus amyloliquefaciens, maize, salt stress, growth promotion

WANG Hua-xiao, LIU Huan, YANG Guo-ping, ZHANG Xiu, LI Zhuang, ZHANG Yan. Effect of Bacillus amyloliquefaciensYM6 on Growth Promotion of Maize Under Salt Stress[J]. Biotechnology Bulletin, 2019, 35(12): 45-49.

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